19
INSTALLERUSER
MAINTENANCE TECHNICIAN
Id
Parameter
Parameter Description Range Default
P0 DHW thermostat
Establishes the boiler ignition and switch-o mode in DHW mode.
0 - Ignition occurs when the water contained in the storage tank drops by 7°C with
respect to the temperature set and switches o when the temperature is at -4°C with
respect to the value set (solar deactivated)
1 - Ignition occurs when the water contained in the storage tank drops by 2°C with
respect to the temperature set and switches o when the temperature is at +1°C with
respect to the value set (solar deactivated)
2 - Ignition occurs when the water contained in the storage tank drops by 10°C with
respect to the temperature set and switches o when the temperature is at the value
set (solar deactivated)
0
On = -7°C
O = -4°C
1
On = -2°C
O = +1°C
2
On = -10°C
O = +0°C
2
P1
Solar delay
timing
e boiler is set to switch-on immediately aer a request for DHW. In the case of
coupling with a solar storage tank positioned upstream from the boiler, it is possible to
compensate the distance between the storage tank and the boiler in order to allow the
water to reach the boiler. Set the time necessary to verify that the water is hot enough
(see par. Solar panels coupling)
0 - 30 seconds 0
P2
Pump function-
ing
e pump can function in two ways.
0 intermittent: In winter "mode" the pump is managed by the room thermostat or by the
remote control
1 continuous: In "winter" mode the pump is always powered and so functions continu-
ously
0 - 1 0
P3
Relay 1
(optional)
e boiler is set-up for functioning with the relay board (optional), which can be
congured
0 = O
1 = Main zone control
2 =General alarm
3 = CH phase active
4 = External gas valve power supply
5 = (Do not use on this boiler model)
0 - 5 1
P4
Relay 2
(optional)
e boiler is set-up for functioning with the relay board (optional), which can be
congured
0 = O
1 =General alarm
2 = CH phase active
3 = External gas valve power supply
4 = Secondary zone control (from TA on relay board contact
5 = Heat pump
0 - 5 0
P5
Relay 3
(optional)
e boiler is set-up for functioning with the relay board (optional), which can be
congured
0 = O
1 = Chiller remote activation
2 =General alarm
3 = CH phase active
4 = External gas valve power supply
5 = heat pump
6 = activation of storage tank pump
0 - 6 0
Id
Parameter
Parameter Description Range Default
t0
Central heating
ignitions timer
e boiler has electronic timing, which prevents the burner from igniting too oen in
central heating mode (with step of 10)
0 - 600 sec-
onds
18
t1
Central heating
ramp timer
In the ignition phase, the boiler performs an ignition ramp in order to arrive at the
maximum power set (with step of 10)
0 - 840
seconds
18
t2
CH ignition de-
lay from TA and
CR request
e boiler is set to switch-on immediately aer a request. In the case of particular systems
(e.g. area systems with motorised thermostatic valves etc.) it could be necessary to delay
switch-on (with 10 step)
0 - 600 sec-
onds
0
t3 Display lighting
Establishes the display lighting mode.
0 Automatic: the display lights up during use and lowers aer 15 seconds of inactivity.
In the case of anomaly the display ashes.
1 Low: the display is always lit with low intensity
2 High: the display is always lit with high intensity.
0 - 2 0
t4 Display
Establishes what the indicator displays 14 (Fig. 2-1).
"Summer" mode:
0: the indicator is always o
1: pump active displays the ow temperature,
pump o the indicator is o
"Winter" mode:
0: always displays the value set on the CH selector
1: pump active displays the ow temperature,
pump o always displays the value set on the CH selector
0 - 1 1
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